PDA alert! In these pictures of pop stars kissing, you'll see celebs getting their smooch on with everyone from their significant others to their good friends.. oh, and there are some awkward ex shots in here, as well.

Below, you can check out photos of singers like Justin Bieber and Selena Gomez kissing. That is one couple in love! There are also snapshots of Big Time Rush member Carlos Pena smooching his lady love, actress Alexa Vega, as well as fellow boy banders Harry Styles and Zayn Malik (of One Direction) giving a loving peck on the cheek. Scroll through these photos of pop stars kissing, and let us know who you think looks like the best smoocher!

Justin Bieber + Selena Gomez Kissing

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Beyonce + Jay-Z Kissing

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Rihanna + Chris Brown Kissing

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Karrueche Tran + Chris Brown Kissing

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Harry Styles + Zayn Malik of One Direction Kissing

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YouTube

Harry Styles of One Direction + Taylor Swift Kissing

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Pink + Carey Hart Kissing

Frederick M. Brown, Getty Images

Justin Timberlake + Jessica Biel Kissing

Harry How / Noel Vasquez, Getty Images

Max George + Tom Parker of the Wanted Kissing

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Calvin Harris + Ellie Goulding Kissing

Instagram

Calvin Harris + Rita Ora Kissing

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Miley Cyrus + Liam Hemsworth Kissing

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Jennifer Lopez + Pitbull Kissing

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Shakira + Gerard Pique Kissing

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Kanye West + Kate Upton Kissing

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Lady Gaga + Taylor Kinney Kissing

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Demi Lovato + Wilmer Valderrama Kissing

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Carlos Pena of Big Time Rush + Alexa Vega Kissing

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Christina Aguilera + Matt Rutler Kissing

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Una Healy of the Saturdays + Ben Foden Kissing

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Gwen Stefani + Gavin Rossdale Kissing

Kevin Winter / Frank Micelotta, Getty Images

Wiz Khalifa + Amber Rose Kissing

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Nick Lachey + Vanessa Minnillo Kissing

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Mariah Carey Nick Cannon Kissing

Noel Vasquez / Pascal Le Segretain, Getty Images

Nicki Minaj + Nas Kissing

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Nicki Minaj + Lil Wayne Kissing

Ronald Martinez, Getty Images

Britney Spears + Rihanna Kissing

Ethan Miller, Getty Images

Madonna + Brahim Zaibat Kissing

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Madonna Kissing Britney Spears, Nicki Minaj + Christina Aguilera

Frank Micelotta, Getty Images / YouTube / Scott Gries, Getty Images